I currently have a Grundfoss Central heating pump (15-50) fitted, which has become noisy over time (a 'rushing' sound of water, I have flushed out the system several times but no change in noise)
Im guessing the pump needs replacing, I have been given an almost new Grundfoss 25-30 to replace my existing 15-50.
Its the same physical size but has slightly different technical details on the front. I seem to recall reading somewhere that this was a slightly different pump (used on the continent ?) but will do the same job / capacity. (Its 230v, 50hz)
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